Fire-box for steam-boilers.



PATENTED SEPT. 6, 1904.

W. H. THORNLEY.

FIRE BOX FOR STEAM BOILERS.

APPLICATION FILED JUNE 26,1899. RENEWED DEO.20.1902.

3 H um I l'oz 1 N0 MODEL.

a W mm; :5 mm

Patented September 6, 1904.

NITED STATES PATENT OFFICE- XVILLIAM H. THOR-NLEY, OF READING, PENNSYLVANIA.

FIRE-BOX FOR STEAM-BOILERS- SPECIFICATION forming part of Letters Patent No. 769,417, dated September 6, 1904.

A li ti fil d June 26, 1899. Renewed December 20, 1902. Serial No. 136,087. (No model.)

To (LZZ whom, it may concern/.-

Be it known that I, VILLIAM H. THORNLEY, a citizen of the United States, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Fire-Boxes forSteam- Boilers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention is an improvement in tireboxes for steam-boilers; and it consists in the novel construction and arrangement of its parts, as hereinafter described.

The object of my invention is to construct a lire-box adapted especially to be used in combination with one or more hydrocarbonburners, said lire-box being so constructed as to become rapidly heated and retain the heat for a considerable length of time after the burners have been turned off. The box is also so constructed as to distribute the heat to the best advantage.

In the accompanying drawings, Figure 1 is a longitudinal sectional View showing a lirebox in proper relation to the boiler, and Fig. 2 is a transverse sectional view out on the line 2 .2, Fig. 1.

The boiler 1 is of ordinary construction and is set in the brickwork in the ordinary manner, the bridge-wall 2 having a space 3 of about one inch between its upper end and the boiler. In the tire-box the grates a are covered with the brick bed 5. The brick bed or partition provides means for separating the pit 5 from the combustion-chamber 5". The hydrocarbon-burners 6 are passed through the front wall of the tire-box, and said burners may be of any construction, or they are preferably constructed as shown in my application, Serial No. 1365M, tiled in the Patent Oltice December 27, 1902. About tive inches from the front wall is located the vertical low deflector-wall '7, said wall projecting above the level of the said burners and extending the entire width of the tire-box, or the said deflector-wall instead of extending the entire width of the tire-box may be made in sections. Immediately behind the deflector-wall, between the latter and the bridge-wall, is located a numher of vertical honeycombed walls 8 8, having spaces 8 of about one inch between their upper endsand the boiler. The honeycombed walls are made of brick with broken joints made by leaving out each alternate brick in the tier. The honeycombed walls are about eight inches apart, and the openings in the one wall are opposite the brick in the next wall, so that the heat in passing through the honeycomed walls must proceed in a tortuous route.

In operation the hydrocarbon-burners 6 are lighted, and the flame is thrown against the deflector-wall 7. The heat passes over the said wall and passes through the openings in the honeycombcd walls and almostinstantaneously makes the brick of the said honeycombed walls white hot. The heat then passes over the bridge wall, around the boiler, through its tubes, and out of the brickwork through the openings 9. The heat is retained for a considerable length of time by the honeycombed walls after the burners are shut off and is evenly distributed about the boiler. After the burners 6 have been shut off the heat from the honeycombed walls 8 will retain the steam in the boilers for about a half hour or longer.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A fire-box comprising a front Wall, a bridge-wall, a pit, a combustion-chainber, a bed, located between the front wall and the bridge-wall, and separating the pit from the combustion-chamber, a low deflector-wall located on the bed, ascries of honcycombed walls located on the bed between the deliectorwall and the bridge-wall, and means for directing a flame against the deflector-wall.

2. A lire-box comprising a front wall, a bridge-wall, a bed located between the front wall and the bridge-wall, a low deflector-wall located on the bed, a series of honeycombed Walls, located on the bed between the deflectorwall and the bridge-wall, and having the openings in one wall located opposite to the solid part of the next wall, and means for directing a flame against the deflector-wall.

3. A fire-box comprising a front Wall, a Wall and means for directing a flame against 10 bridge-Wall extending upward so as to leave the deflector-Wall. a narrow space between the bridge-Wall and In testimony WhereofI affix my signature in the boiler-space, a bed located between the presence of two Witnesses. front Wall and the bridge-Wall, a low deflector- Wall located on the bed, a series of honey- WILLIAM THORNLLY' combed Walls of approximately the same Witnesses: height as the bridge-Wall and located on the A. E. GLAscooK,

bed between the deflector-Wall and the bridge- BERTHA L. DANA. 

